US284569A - Edwaed b - Google Patents

Description

(No Model.)

- E. B. NIMMO.

STYLOGRAPHIG PEN.

Patente Sept. l, 1883.

forms the ink-reservoir.

. in stylographic pen iviinn STATESA EDVARD B. NIMMO, OF

STYLOGRA SPECIFICATION forming part'of Letters P BROOKLYN, NEX/V YORK.

PHlc PEN. f

atentY No. 284,569, dated September 4, 1883.

Application filed october 9, rss2. :No mmieifi To @ZZ wiz/om, t may concern/f j Be it known that I, EDWARD B. N IMMO, of Brooklyn, Kings county, New York, have invented certain new and useful Improvements in Stylographic Pens, of which the following is a specification.

My improvement aims to furnish a stylographic or fountain pen of simple and inexpensive construction with an effective action, more particularly in insuring an even and regular flow of the ink when writing, yet reducing the bleeding77 action to a minimum.`

To` these ends my invention embodies sev eral novel features,whicl1 lie chiefly in the construction of the ink-reservoir and its outlets, and in the vibrating needle-holder or ink-con ductor which operates in relation'with the res-v ervoir, whose obj ects are to insure the retention of the ink when the pen is quiescent, yet render its llow certain and regular when the pen is in action, as hereinafter fully set forth.

In the annexed drawings, Figure l presents'V an external elevation of my improved pen. Fig. 2 is a sectional elevation thereof, showing` its interior. Fig. 3 is a fragmentary sectional elevation of the lower part, taken at right an. gles to Fig. 2. Fig. et is a view of the needle and its holder removed. Fig. 5 represents a modification of the outlet end of the ink-reservoir. Fig. 6 represents a plan of the outletvalve of the ink-reservoir.

In the drawings, a indicates the case or handle of the pen,which is, as usual, a tube, and In the upper end of this tube is screwed the hollow plug b, which carries an inwardly-op eningvalve, which forms the air-vent valve, and is held -lightly to its seat by a delicate spring, but will yield slightly to allow a slow infiltration ofair when the ventcap c is screwed up, as will'be understood. This vent-valve, 85e., is of ordinary construction,which is well shown in the drawings, and therefore needs no special ldescription here. The lower end of the reservoir tube a lis threaded internally to receive the threaded neck on the point-section (l, which screws tightly therein, as usual. In the pointed end of the section el is fixed the usual capillary tube, forming the writing-tip of the pen, in which the needle or Style e worksas is common Now, nea-r the bore or outlet end of the reservoir, and just above the socket in which the point-section is screwed, a groove, f, is formed around the bore of the reservoir, in which a disk, h., of pure vulcanized elastic rubber or other suitable iieXible or elastic material, is socketed, as fully shown Iin Figs.' 2 and 3. This disk is shown detached in plan in Fig. 6, and is slit or perforated with one or more slits or cuts,preferably at right angles to each other, in cross shape, as shown, which slits are also indicated in Figs. 2 and 3. This disk thus covers the mouth or outlet of the reservoir, land when at rest the slit or cut sections close together, so as to positively retain the ink and prevent its outflow'from the reservoir. If, however, the disk be agitated or moved up and down slightly at the middle, the slits or Y cut sections will be slightly opened and closed and so articulated as to produce a gentle, regular, and positive outfeed of the ink. This ink-feeding movement of the disk is effected directly by the natural and usual vibration of the needle e in the act of writing, for the upper and inner end of the needle is connected with the needle-holder y, which is inclosed in the point-section d, and reaches to the slit disk 7L and bears upon or cont-acts therewith, as fully shown in Figs. 2 and 3. As usual, the point of the needle@ protrudes slightly from the writing-point of the pen when at rest, as seen in Fig. 3, and in this position of the needle the needle-holder g will seat at its lower end on the tapering end of the bore or cavity in the point-section which vincloses it, which thus forms astop to prevent the further projection of the needle, and the further down motion of its holder. The holder, however, is of such a length that when in this position its upper end will just contactwith the disk h, when said disk is in its quiescent and flat position, as seen in Fig. 3. It is therefore obvious that when the needle is forced inward hy the `pressure of writing, the needle-holder will be forced against the disk h., so as to distend or bulge the disk slightly upward or inward in the reservoir, as shown 'in Fig. 2, while when the elastic reaction of the disk will move the needle-holder back to its stop and project the point of the needle from the tip of the pen, as seen in Fig. 3. Hence the vibrations of the pressure on the needle-point is relaxed the IOO needle agitate the disk, and viceversa, thus producing a gentle and positive outfeed of the ink, proportioned to the movements of the needle, while at the same time the elastic disk serves as a spring to keep the needle proj eeted assisted by the weight of the holder g, thus dispensing with the necessity for a special spring, as heretofore used, and thereby rendering the construction very simple and efficient. rIhe needle-holder g may therefore be termed the agitator/7 as it agitates the disk and induces the outfeed of the ink, and it may also be termed the ink-conductor, as it con- .ducts the inkl by capillary attraction direct from the disk to the needle, or to the capillary tube r, in which the needle Works. The agitator is, hence, made of two thin overlying plates, g g, loosely riveted to the needle at the lower end, thus leaving` a narrow capillary space between the plates, through which' the ink is evenly conducted from the disk tothe needle, as best shown in Fig. 2.

The needle e is preferable made of a iinev stiiil wire, of any suitable metal, bent withair eye at its upper end, and held between the lower ends of the agitator-plates g gv by a rivet, i. The plates g are thus riveted together andI forms a pivot on which the plates `may be swung apart or diverged, as seen in Fig. 4, which will thus allow the plates to be easily cleaned of any incrustations of ink or other somewhat free or loose, so that in the vibration of the needle and agitator the plates are permitted a slight longitudinal shearing movement on each other, which conduces toa perf fect feed of the ink down the capillary channel between them, and prevents the ink from becoming clogged therein, as willv be readily appreciated.

voir opening directly over the disk h, I prefer to provide the reservoir with a damming tube or partition, k, rising from the bottom of the reservoir up withiny the same to about the middle thereof, as shown in Fig. 2, the interior or bore of the tube forming the outletchannel to the disk l1', while the space around the tube forms a pocket in which a quantity of ink will always be dammedf or imprisoned. This feature of construction I find to greatly reduce the tendency to. bleed, which exists to a greater or less eXtentin allpens ofthis class, caused by the expansion ofthe containedair,

commencing to write. The` contracted'passage of the tube 7c and the larger capillary surfaces which it presents to the ink seem toappreciably retard its outiiow, so that bleeding is greatly resisted and reduced. By this means, also, but a small quantity of the ink in the reservoir rests on the diaphragm` h, particularly when the ink has been used down to thetubek, and

after this point the ink held in the pocket i around the tube may be readily thrown. overinto the outlet-channel by giving the penv an occasional shake during writing, thus keeping upa supply of ink to the disk h Without having the entire quantity sustained on the disk.

By referring to Figs. 2, 3, and 4 it will be noted that the agitator g g is formed of two thin iiat blades, preferably of hard rubber, of about the same width as the diameter of the round cavity or bore in the point-section which l incloses them, so that the agitator is a nice working fit in the position of a diametrical plane in the cavity, but does not entirely fill the cavity, leaving a freespace on each side ofthe agitator, as seenin Fig. 2. This feature also reduces bleeding, as-the free space on each side of the agitator allows the small quantity of ink which may bleed from the disk h` torise in this space, and thus prevents -it from immediately ruiming of or bleeding from the. tip. before it could be used inthe act J of' writing, as will be readily understood.

In Fig. 2 I have shown the tube k and sock- I et for thedisk n formed solid or integral with -the case or reservoir-tube a, but these parts Q may be made. separate from the tube a, 'as indicatedfin. Eig. 5, and then tightly inserted in' 4the.reservoir-tube, as will be understood.

to the needle at one end only, which thus rIhie entire construction of the pen, as may Anow bey seen, is simple and inexpensive, and its action direct, positive, and reliable, and .the invention. forms, it is believed, a material improvement in pens of this class.

matter. The riveted joint, furthermore, is

What I claim is- 1. A fountain. or stylographic pen construct- Q ed with a flexible and slit or perforated disk `or diaphragm covering the outlet of its ink- Vreservoir, with an agitator arranged to vibrate against the said slit disk by the vibratory movement of the needle or writing movement of the pen, substantially as and for the purpose herein set forth. Instead of having the base of the ink-reser- 2. Ina stylographic pen, an elastic slit disk coveringy the outlet of the ink-reservoir, `in combination with an agitator connected with the vibrating needle, bearing at one end against -the said elastic disk, and resting at the opposite end o n a seat or stop in the pen point or' case, whereby the inward movement of the needle and connected agitator distends. or 5 stretches said` disk, while the elastic reaction of athe disk throws out the agitator and its at- :tached. needle, thereby maintaining the vibra tory motion ofthe needle and inducing the .f outfeedn of the ink at the same time, substan- Vtially as herein shown and described.

and ink, due to the heat ofthehand whenrst 3. In. ay stylographic pen, an agitator andinkconveyer .connected at one end with the needley and bearing at the opposite end on the outlet of the ink-reservoir, and formed in two overlying platesA or sections, forming a capililary ink-channel between them fromthe outi let of the reservoir to the needle, or tothe capillary tube in which the needle works, substantially as herein set forth.

4. The combination, in a stylographic pen,

Vwith the vibrating needle, theink-reservoir,

and a suitable vent thereto, of an elasticV slit IOO IIO

disk or partition covering the internal outlet of the ink-reservoir, an agitator .connected with the vibrating needle and bearing on said disk, and formed in two overlying plates, with a capillary ink-channel between theni, substantially as `herein shown and described.

5. The needle-holder and ink-conductor g g, formed of two overlying plates or blades pivoted to each other at one end at their connection with the needle, and capable of being opened or diverged apart or closed together, substantially as and for the lpurpose set forth.

G. In a stylographie pen, an ink-reservoir formed with an intermediate dainniing tube or partition rising from the inlroutlet at the base of the reservoir up within the saine to or near the middle thereof, forming a dainnied ink space or pocket around or on one side of said partition or tube, from which the ink can be shaken into the outlet-channel as desired, substantially as and for the purpose set forth.

7. A stylographic pen constructed to. enibody the following elements: an ink-reservoir fornied with a suitable air-vent at one end and an internal outlet at the other end, an

elastie slit disk covering said outlet, an agitaf tor bearing below said disk and connected with the needle in the point-section of the oase, and a bore or cavity around said agitator in the point-section, of larger volume than the agitator, providing a free space about the same, substantially as and for the purpose set forth.

8. In a stylographic pen, the combination, with the ink-reservoir, `formed with a socketgroove around lits base or outlet, of an elastic slit disk, hf, secured therein, and a vibrating needle operating in relation therewith in the point-section of the pen, substantially as andfor the purpose set forth. y

9. In astylographic pen, an ink agitator and conveyer connected with the needle, formed of two overlying plates, providing a capillary ink-channel between them, and freely jointed to permit of a longitudinal shearing niove- 45 nient of the plates upon each other under the vibrationsof the needle, substantially as herein set forth.

EDV. B. NIMMO. Vitnesses:

CHAs. M. HIGGrNs, JN0. E. Gavin.

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